Striping mechanism for circular-knitting machines



* Aug. 19, 1924. 1,505,466'

E. JACKSON STRIPING MECHANISM FOR CIRCULAR KNITTING MACHINES Filed May 16. 1923 abbozwuf EDWARD JACKSON, F READING. PENNSYLVANIA. ASSIGNR TO THE NOLDIF AND I 1,505,466 PATENT.' ori-ie.

HORST CGMPANY, 0F READING, PENNSYLVANIA', A .CORPORATION OF PENNSYL- VANIA.

STRIPING MECHANISM FOR. CIRCULAR-KNTTING MACHINES.

Application filed May 16, i923. Serial No. 639,303.

To all 'whom it may concern:

. Be it known that l, EDWARD JACKSON, a

citizen of the United States, residing at Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Striping Mechanism for Circular-Knitting Machines. of which the following is a specification.

' My invention relates to circular knitting machines having vertical striping mecha.- nism, and it consists in improved means for determinedly engaging different striping threads with different numbers of needles, as fully described in'connection with the accom'panying drawing. Fig. 1 is a detail perspective view showing a single thread-guide and its relation to a grouping. of needles, only a few of thecircular's'eries of the latter being indicated in connection with a fragmentary portion 'of 4the needle cylinder.

Fig. 2 is a diagrammatic front elevation indicating a needle Vgrouping for a thread guide; and Fig. 3 is a cross-sectional view on the line 3 3' of Fig. 2, more clearly indicating the needle-engaging finger swing.

Fig. 4 indicates a multi-colored stripe produced by the needle grouping shown in Figs. 2 and 3.

My improvements relate'4 to a circular knitting' machine having a striping attachment of the type fully shown and described in Robinson Patents Nos. 1,357 .253 and 1,357,254' of November second, 1920, the drawings merely indicating one such thread guide 11 in connection with a portion of a needle cylinder and a fewadjacent needles, as suiiicient to fully describe my invention. this guide having the usual socket bearing 12, and cam-actuated rollers 15 and 16;. the stops for limiting the needle-engaging swings thereof not being shown, as any of the diiierent means employed in said patents or others may be used as best suited to the requirement. The number of thread guides 1 1 employed. it will be understood. depend on the number of embroidery stripes de-A sired, and each guide may be given like varied to termined.

The thread-guide 11, for purposes of my invention, is formed with a' plurality of thread-carrying i l produce diii'ereing stripes as deswings to produce similar stripes or may be arate thread and adapted to swing in a fixed spaced arc around a determined group of adjacent needles 25 to engage their embroidery threads with such needles in the manner described in'said Robinson patents. thc needles ybeing vertically movable in the equally spaced grooves of needle cylinder l18. In the drawings this guide is shown with three such' thread-carrying fingers 20.

20, 20, spaced for and adapted to swing in -equal arcs 21, 21, 2l, embracing adjacent groups of one needle and three needles re.-

spectively.. such construction yproducing a diierently grouping the needles 25 within the respective needle-engaging swings 21, 21, 21, of said thread-carrying fingers 20,20. 20, the drawing showing a single needle in the center and three needles each in the outer. oup. Thesegroups are formed as shown. by latterly bending the projecting hooked-end .portions of certain needles 25 so as to bring them within the needle engaging swing of one of said thread carrying fingers 20; such bending having no harmful efi'ect on the fabric 'as the sinkers equally distribute the yarn loops to the respective needles. This bending of the needles may be for the Vpurpose of removing a needle from the swing of one finger 20 and bringing it within the swing of an adjacent finger. as in the case of needle 25a; or it. may be for the purpose of bringing a finger not in- .cluded in any such swing within the swing of an end finger 20, as in the case of needle 25"; or it. may be merely to bring the hooked ends into closer relation so the are of swing of the thread guide 11 may be only that required-to engagesuch closed together group. as in the case of needles 25, 25. Thethread guide 11 is properly set so that the needleengaging swings 21, 21, 21 of its fingers 20. 20, 20 while equal, will each only engage the needles of one group.

ln Fig. 4 I have indicated a fabric having a stripe produced by the needle arrangement shown in the drawings, a., a the outer portions being formed by the outer three-needle group with a central dividing portion b `formfed on the eenterneedle, which should vsa preferably be of a lcontrasting color for eect. v

The number of thread guide fingers 20,

- may be of course vvaried as desired, as well i ing a thread guide having a plurality of -fixedly-spaced thread-carrying ngers,

' means for imparting a determined needleengaging swing to said guide, and a needle cylinder having a circular series of equally spaced reciprocating needles certain adjacent ones 'of which are bent laterall to closely group their thread-engagingl en s.-

2. A circular knitting mac ine comprising a thread guider-having a plurality of xedly-spaced thread-carrying ngers, means for-imparting a determined needleengaging swing to said guide, and a needle cylinder having a .circular series of equally spaced reciprocating needles certain adjacent ones of which have their-'projecting portions bent laterally to determinedly group their thread-engaging ends within the swing of said fingers. v

3. Acircular knitting machine comprising a thread guide vhaving a plurality 'of fixedly-spaced thread-carrying fingers, means for imparting a determined needleengaging swing to said guide, and a needle cylinder having a circular series of equally spaced reciprocating needles certain adjacent ones of which have their projecting portions bent laterall to determinedly vary the number of ne les embraced by the swing of the several n rs.

In testimony whereof aix my signature.

EDWARD JACKSON 

